Improved machine for turning irregular forms



W. I. G'ASSELMAN. MAUHINE FOR TURNING IRREGULAR FORMS.

No. 12,192." Patented Jan. 9, 1855.

UNITED STATES PATENT Urrron.

WILLIAM I. CASSELMAN, OE- VERNON, NEW YORK.

IMPROVED MACHINE FOR TURNING IRREGULAR FORMS.

Specification forming part of Letters Patent bio/12,192, dated January 9, 1855.

To all whom, it may concern.-

Be it known that I, WILLIA I. CASSELMAN, of Vernon, in the county of Oneida and State of New York, have invented a new and useful Improvement iuMachinery for Turning Irregular Forms; and I do hereby declare that the following is a full, clear, and exact demachinery which produces irregular-surfaces by a true circular motion of the work and a movement of the tool produced by a pattern in a direction parallel with the axis on which the work revolves. Y

It consists in an improved and more convenient mode of arranging and combining the work-tables, pattern-table, cutting-tools, and tracer, whereby greater facility is afforded for turning two or more articles at the same time from the same patter-11..

To enable others skilled-in the art to make and use my invention, I will proceed to describe its construction and operation.

A- is a bed, and B B are standards constituting the framing. of the machine.

C C (1 are three upright shafts arranged in the same plane at equal distances apart and supported on suitable hearings in the bed A. These shafts carry at their upper ends the horizontal tables D I) D',wl10sc faces are all in the same plane. The central table I) is to support the pattern, and the outside tables are to carry the work. All three tables receive rotary motion at the same velocity through endless screws (1 a a on the main shaft E, gearing with worm- \vheels I) Z) b on their shafts C C C.

1* is a horizontal slide, which is adjustable at dilferent elevations above the work-tables i n slots in the standards B B by means of screws 00. To this slide is fitted the sliding carriage Gpvhielrcarri's both the tracer d and the tools 6 e, the tracer being attached to a slider II, which is fitted to work between vertical slides f f in front of the center of the carriage I G, and the tools being carried by sliders II II,"

which are fitted to work between vertical slides g g on opposite sides of the tracer-slider II. Thecutting-tools e a may be of any description commonly used in turning the material to be operated upon; but I prefer-to use rotarycutters, such as are commonly used in machinecarving. Thesecutters are secured in vertical stocks I I, which are caused by suit-able means (not shown) to rotate in suitable bearings h h on the sliders II II. The points ofthe tools and the tracer should stand in thesame vertical plane, which should be parallel with and very near to if not in the same plane in which) the axes of the tables I) D I) stand, and the points of the tool should be at a distance from the points of the tracer exactly equal to the distances between the tables D and D D. I

The tool-sliders II II are suspendedby studs jj from the ends of two leversJ J of the first order, which have the same fulcrum i attached to the e'aruiage G directly over the center.- The opposite ends of these lovers are connected by studs 1. I; with the ends of two shorter levers IQ K of the first order, which work on fulcra Z I, secured to the carriage, the tracer slider llbeing suspended by a stud m from the opposite arms of the said levers. The studs jj, 7.: 7.", and I, formingthe connections between the lovers and suspending the tool and tracer-sliders, are all litted in slots to provide for the play which is necessary for the movements of the lovers; but the connections may be made by shortlinks or otherwise. This arrangement of levers will cause the tool-sliders and tracer- -slider to rise and all simultaneously.

The carriage (.ir receives the necessary motion to carry'the tracer and tools across the pattern and work through one or the-other of two screws a u on a shaft L, which receives motion by a belt running over a pulley Q from a pulley It on the main shaft, one of the said screws being right-handed to move the carriage in one direction and the other left-handed to move it in theother di rection." The nuts 0 O, which belong to the ,said screws, are divided into two parts and attached to the opposite ends of two lovers M M, attached to the carriage, and the reversal is efiected by closing one. nut upon the screw and opening the other, which is done by simply changing the position of the levers M M;

The nuts when closed will require to be held so by a catch or some fastening; but I have shown'no means of keeping them closed, as .the means by which the reversal of the move- I centers of the work-tables.

In operating with this machine the pattern is secured concentrically upon the table I) and the wood, stone, or other material to be operated upon secured to the tables D D, when the machine may be set inv motion. The operation may'commence at the center orperi phery of the pattern. As the tables revolve, the tracer and tools are caused by' the'movement of the carriage G on the slide F to move slowly across the face of the pattern and work;

and the tracer as it ascends and descends in tracing over the undulating surface of the pattern gives by means of the levers J J K K a corresponding movement to the cutters and causes them to cut the work to the form of the pattern. The levers may have the lengths of their arms so proportioned as to give the cutters exactly thcsame amount of upward and downward motion as the tracer to give the work precisclythe form of the pattern, or else they may be proportioned to produce greater or less elevations and depressions than those in the pattern.

Two or more rm olving work-tables may be employed on each" side of the pattern-table, with a corresponding number of tool-slides and tools attached to the carriage G. These additional tools may be governed by the same pattern, in order to eiteet which the lovers J J may be extended, ordifierent levers of cor-v responding character may be employed; but in either case the additional tool-slideswill require each a distinct lever K. I do not claim the suspension of a tool from a lever which transmits to it a movement corresponding; with the movement given to the tracer by passing over the undulating surface of the pattern; neither do I claim the employment of a tool thus suspended above a revolving'work-table; but

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

The particular mode herein described arranging and combining a pattern-table, two or more work-tables, a tracer, and a number of cutting-tools to correspond with the number of work-tablesthat is to say, the work tables and pattern-tz tble being arranged with their axeslin the same plane, and the tracer, cutting-tools, and the levers which connect vthem being all attached in such a Way to a carriage which has a movement in a direction perpendicular to the axes of the revolving tables, but parallel to the plane of the said axes, that the points of the cutters and tracer stand in the same plane or in a plane near to and parallel with the plane of the axes of the tables and will all-bear at all times the same relation to each other and to the pattern-and work. v

' \VILLIAM I. LASSELVAN. \Yitnesscs:

ll. \VALEs,

O. IIJILiNN. 

